阴影法是光学可视化方法之一,它可以观测飞行物体阴影轮廊和爆炸、冲击波、压缩波及风洞中流场变化等现象,而且阴影法使用的装置在所有光学显示方法中是最简单的。因此,这一古老的方法在兵器研究中一直得到广泛应用。 在实际工作中,人们希望能拍摄较大的目标,但受到现有阴影仪准直镜和观测镜口径的限制,这就需要用大口径透镜或反射镜,然而大口径光学另件的制造有许多困难。本 The shadow method is one of the methods of optical visualization. It can observe the phenomenon of shadow and corona of the flying object, explosion wave, shock wave, compression wave and the flow field in wind tunnel. And the shadow method uses the most simple method in all optical display methods. Therefore, this ancient method has been widely used in weapons research. In practical work, one hopes to photograph larger targets but are limited by the aperture of the current shading collimator and sight glass, which requires the use of large-diameter lenses or mirrors, however, the manufacture of large-aperture optical components Many difficulties this